fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
8/7p/8/pp2k1P1/2p5/P1P2K2/7P/8 w - - 3 47 | Ke3 | Does White have any isolated pawns? | Yes: a3, c3 | structure |
8/4Ppkp/3p2p1/p7/3q4/2P3PP/1rN2n1K/R7 w - - 0 32 | Nxd4 | Identify any White knight outposts on the board. | d4 | outposts |
5rk1/pp2n3/1q1rP1pp/3p4/1P6/5B2/PB2QPPP/R5K1 w - - 5 23 | Re1 | What piece is on h6? | Black Pawn | occupancy |
3r1rk1/pp2nppp/q1p1p3/2P5/3P2n1/P1NR1Q1P/1P3PP1/3R2K1 w - - 0 25 | hxg4 | Identify any White knight outposts on the board. | None | outposts |
8/R7/6pk/8/7P/pr4K1/8/8 w - - 7 46 | b4b3 | Is the Black king in check? | No | check |
2rqk2r/pb2bppp/1pn1pn2/2ppN3/3P4/PP1BP3/1BPN1PPP/R2Q1RK1 b k - 2 10 | cxd4 | Are there any open files in this position? | No | files |
r2q1rk1/2p3pp/p1n1b3/1p1pp3/8/1NP2N2/PPB2KPP/R1BQ4 w - - 0 15 | Nc5 | Identify any Black knight outposts on the board. | e4 | outposts |
2r2rk1/pp1bqppp/5b2/3np2Q/4P3/5NP1/PP3PBP/R1BR2K1 b - - 1 16 | Nb4 | What is the material balance in this position? | Equal | material |
r1b2r2/pp4p1/6k1/2q1p3/3nQP2/4B3/P1P4P/1R3RK1 b - - 0 25 | d3e4 | Is the Black king in check? | Yes | check |
r3kb1r/1p1b1p2/p1nppp2/7p/1q2PP2/1N6/P1PQB1PP/RN3R1K w kq - 6 15 | Qe3 | Identify any Black knight outposts on the board. | c5 | outposts |
r1b2r1k/2q2p1p/p2ppb1Q/4nP2/1p1NP3/2N5/PPP4P/2KR1BR1 b - - 0 17 | Qe7 | Are there any open files in this position? | Yes: g | files |
1Q6/8/8/8/K7/8/P5k1/7q w - - 0 55 | Qb7+ | Does Black have any isolated pawns? | No | structure |
b1rr4/2qnppkp/p2p2p1/p7/P3PP2/1P3B2/2PQN1PP/3R1R1K w - - 0 21 | Rc1 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
6R1/5k1p/2P1p3/3bKp2/4p3/2r5/8/1R6 w - - 2 3 | Rbg1 | Are there any open files in this position? | Yes: a, b, d, g | files |
6k1/p6p/1p1p2p1/2pr4/P1b5/8/1PQB2P1/3KR1q1 b - - 2 30 | Qxg2 | Are there any open files in this position? | Yes: e, f | files |
5qk1/5r2/5np1/2p2b1p/P1B5/2Q5/1P2R1PP/6K1 w - - 0 35 | Qxf6 | Does White have any passed pawns? | Yes: a4 | structure |
r1b1Q3/1p2b1p1/1q2p1Pk/3pN3/3Pn3/1P1B4/1BP3PP/1R5K w - - 1 27 | Bc1+ | Is the move from g6 to d7 legal? | No | legality |
4r1k1/1b1Rqppp/pNp2b2/4p3/8/5B2/PPQ2PPP/6K1 b - - 3 24 | Qb4 | Is the move from e7 to d6 legal? | Yes | legality |
r1b1rk2/3n1pp1/4p3/p3P1N1/1nqp1P1Q/1RN5/PPP3PP/1K2R3 w - - 0 25 | Qh5 | Are there any open files in this position? | No | files |
q6k/p1p2r2/1p1p1P1p/n7/Q7/P1P5/4N3/4K1R1 w - - 2 27 | Qh4 | Is the move from c3 to c4 legal? | Yes | legality |
r2qk2r/pp1bbpp1/1nn1p2p/3pP3/2pP1N1P/P1P1BN2/1P3PP1/R2QKB1R w KQkq - 0 12 | Nd2 | Does White have any passed pawns? | No | structure |
rnnqrbk1/ppp2ppp/8/2PP2P1/4pP1N/1P2B2P/P2QB3/2R2RK1 w - - 1 22 | f5 | Does White have any isolated pawns? | No | structure |
r5k1/pp3p2/3R3p/n4Qp1/5p1P/8/6P1/4q2K w - - 1 27 | e2e1 | Is the White king in check? | Yes | check |
2r3k1/6pp/p1p1p3/q1p4P/2Pp4/3P2R1/1PK2r2/8 w - - 1 30 | f8f2 | Is the White king in check? | Yes | check |
r2q1rk1/ppp2ppp/2nb1n2/3pp3/P5b1/1PP1P1P1/1B1P1P1P/RN1QKBNR w KQ - 1 8 | f3 | What is the material balance in this position? | Equal | material |
1r1qr1k1/3nppb1/b2p2p1/2pn4/8/2N1BNPB/PPQ1PP2/R3K2R w KQ - 0 15 | Qxg6 | Does Black have any isolated pawns? | No | structure |
8/p5k1/5p2/2P1pP2/1n2N1P1/P3K3/1P5P/8 b - - 0 38 | Nc2+ | Identify any Black knight outposts on the board. | d4 | outposts |
rn2kbnr/pbpp4/1p2pp2/6P1/4P1p1/2NPB3/PPP1B1Nq/R2Q1RK1 w kq - 0 13 | h7h2 | Is the White king in check? | Yes | check |
b1qr2k1/r3bpp1/5n1p/1ppP4/2Q2B2/2N3P1/1P3PBP/R2R2K1 w - - 0 21 | Rxa7 | Does White have any passed pawns? | Yes: d5 | structure |
8/8/4p3/1p2Pp2/1B6/5k1p/8/6K1 b - - 1 44 | Ke2 | What piece is on b8? | Empty | occupancy |
r1bqkb1r/3npppp/pp1p1n2/2p5/P3P3/3P1N2/1PP1BPPP/RNBQK2R w KQkq - 0 7 | Na3 | Is the move from b2 to b3 legal? | Yes | legality |
r3r1k1/3q1pp1/6np/p2P3n/1p1QPP2/6P1/1P1RBN1P/6KR b - - 0 35 | Nhxf4 | What is the material balance in this position? | White is up 1 pawn of material | material |
7k/2p2pR1/2rnr3/2p1pNpp/p1P1P3/P2K1P2/6PP/2R5 w - - 10 32 | Rxg5 | What piece is on h5? | Black Pawn | occupancy |
r1br2k1/2q1bppp/p1npp3/1p1nP3/1P1P4/P2B1N2/4QPPP/RNBR2K1 w - - 0 14 | Ra2 | Does White have any passed pawns? | No | structure |
rnbq1rk1/ppp1ppbp/5np1/3p2B1/3P4/2P1PN2/PP1N1PPP/R2QKB1R b KQ - 0 6 | c5 | Is the move from b7 to b5 legal? | Yes | legality |
r2q1rk1/1p2n1b1/3pPnpp/p3p3/1P2p3/B1N3P1/P3BP1P/R2Q1RK1 w - - 0 17 | bxa5 | What piece is on h7? | Empty | occupancy |
5rk1/R4pbp/1p4p1/2pN4/8/1K5r/2P5/3R4 w - - 1 37 | h2h3 | Is the White king in check? | Yes | check |
2r2b1r/p2k1ppp/4bn2/3pp3/8/2N3P1/PP2PPBP/R1B2RK1 w - - 0 13 | Rd1 | Is the move from g2 to h3 legal? | Yes | legality |
r2q1rk1/2p3pp/p1n5/1p1pp3/6b1/1NP2N2/PPB3PP/R1BQ2K1 w - - 2 16 | Qe1 | Are there any open files in this position? | Yes: f | files |
r2qkb1r/pp3ppp/2p5/4P2b/4p3/6PP/PP2PP2/RNBQ1RK1 w kq - 0 12 | Nc3 | Is the White king in check? | No | check |
3r1rk1/pp3ppp/2n5/3b4/2B5/P3P3/1PQ2PqP/R3K2R w KQ - 0 17 | g5g2 | What is the material balance in this position? | Black is up 3 pawns of material | material |
7k/p5rp/8/3R1p2/2q4Q/4P3/1P3PPP/6K1 w - - 0 36 | Qxc4 | Does Black have any isolated pawns? | Yes: a7, f5, h7 | structure |
r2qkbnr/pp1B1ppp/8/4p3/8/8/PPP2PPP/RNBQK2R b KQkq - 0 10 | b5d7 | Is the Black king in check? | Yes | check |
3r2k1/3rb1p1/1pq1bp1p/p2p3Q/5P2/P1BRP1PP/1P1R2BK/8 w - - 0 32 | Qd1 | Identify any White knight outposts on the board. | d4 | outposts |
r1b1rnk1/2p2pp1/1b3q1p/p1p1p3/2P1P3/1P2BNNP/P3QPP1/3RR1K1 w - - 2 21 | Nh5 | Is the move from a2 to h7 legal? | No | legality |
8/1p1k1ppp/p1r5/8/8/1PN5/1P3PPP/3R2K1 b - - 3 30 | e1d1 | What is the material balance in this position? | White is up 3 pawns of material | material |
r6r/1bp1qpk1/1p1p1pn1/p2PpB2/P3P2p/2P1P2P/1P3RPN/3Q1NK1 w - - 0 33 | Nd2 | Is the Black king in check? | No | check |
3brrk1/1pp3p1/p2p2bp/3Npp2/4P3/2PP3P/PP1N1PP1/R3R1K1 b - - 1 19 | Bf7 | What piece is on h2? | Empty | occupancy |
r2q1rk1/bpp3pp/p1npp3/4p2n/PP2P3/2PP1N1P/3N1PP1/R1BQR1K1 b - - 2 12 | Qe8 | Are there any open files in this position? | No | files |
r2qkb1r/ppp1pppp/5n2/3P4/2pQP3/2N2b2/PP3P1P/R1B1KBR1 b Qkq - 3 9 | e5 | Identify any Black knight outposts on the board. | d3 | outposts |
3r1rk1/1bqpnppp/pNp5/2P1p3/2Q5/5B2/PP3PPP/R2R2K1 w - - 0 20 | Qb4 | Are there any open files in this position? | No | files |
7k/r1q2ppp/p4b2/1p1QpP2/4P3/8/PP2B2P/1K4R1 b - - 0 25 | g6 | What piece is on e5? | Black Pawn | occupancy |
r1bqk3/p2nb1Br/2p2pQ1/1p1p3p/4pP2/1PN1P3/P1P1B2P/R3K1NR b KQq - 1 20 | g2g6 | Is the Black king in check? | Yes | check |
r2q1rk1/pppn1ppp/5bb1/4p3/3P4/4B1N1/PPP1BPPP/R2Q1RK1 w - - 0 12 | d5 | Are there any open files in this position? | No | files |
r1b2rk1/p2p1pBp/1p4p1/8/2P5/8/PP1QBPqP/R3K2R w KQ - 0 16 | Qd4 | Are there any open files in this position? | Yes: e | files |
7k/pp3p2/7b/3PP3/4b2Q/6PP/Pq3nB1/4R1K1 b - - 1 35 | Qb6 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
1Q6/3qN1pk/2pBnpb1/ppp5/4PP1p/P1P4P/1P4PK/8 b - - 3 34 | Be8 | Is the d-file open, semi-open, or closed? | open | files |
r1b2r2/ppp2P1k/6q1/3n3p/7P/4Q3/PBP5/2KR3R w - - 0 22 | Rxd5 | Is the move from e3 to f6 legal? | No | legality |
r1bq1rk1/pppn1p2/2n3p1/3Np1Np/2P4Q/8/P3BPPP/R2R2K1 w - - 0 21 | Bxh5 | What piece is on g6? | Black Pawn | occupancy |
r1bq1r1k/ppp3pp/2n5/2bPp1N1/3P2n1/1B6/PPP2PPP/RNBQ1RK1 b - - 0 9 | exd4 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/pbr4k/1p4R1/4N3/2p2PPK/Q7/P6q/8 w - - 0 37 | Kg5 | Does White have any isolated pawns? | Yes: a2 | structure |
8/5p2/4p1k1/3pPpPp/1p1P1P2/1P2R1K1/5Q1P/2r4q b - - 2 46 | Rf1 | Is the Black king in check? | No | check |
r5k1/1p3pp1/2p4p/p1bpP3/3NP2q/P1NB3b/1PQ2R2/3R2K1 b - - 2 21 | Bxd4 | Identify any White knight outposts on the board. | None | outposts |
5b2/4p2p/pp2Pkp1/3qp1Q1/5r1P/2R5/PP3P2/4R1K1 b - - 9 36 | Kg7 | Does White have any isolated pawns? | Yes: h4 | structure |
4rrk1/p3q2p/2p3p1/2Npnb2/1P1B3b/2P3P1/P2QB2P/4RRK1 b - - 0 21 | Bf6 | Are there any open files in this position? | Yes: e, f | files |
2rq1r1k/3b1ppB/4p3/p1bpP3/1n4Q1/5N2/1PP1NPPP/3R1RK1 b - - 2 19 | Kxh7 | What is the material balance in this position? | White is up 1 pawn of material | material |
rnr3k1/p3BNbp/3P2p1/1R1B4/8/4n3/PP4PP/7K w - - 5 27 | Nh6+ | What piece is on d6? | White Pawn | occupancy |
2r3k1/3q1pb1/1Q1p2p1/1N1Ppb1p/rp5P/5P2/PP4P1/K1NR1B1R b - - 0 20 | e4 | What piece is on a2? | White Pawn | occupancy |
r1r3k1/pb6/1p1bNppp/4p3/2P1P3/P7/1P3PPP/R2B1RK1 w - - 0 21 | Bb3 | Does White have any isolated pawns? | No | structure |
r1b1k1nr/ppp2ppp/8/4n3/1b2p3/2N5/PPPB1PPP/R3KBNR w KQkq - 0 8 | Nxe4 | Is the move from g2 to a3 legal? | No | legality |
3b1r1k/3P2pp/8/p7/2Q1p3/3p4/PP3pPP/2R1qR1K b - - 5 33 | d2 | What piece is on d1? | Empty | occupancy |
1kb4r/2q4p/5Q2/1P1P1P1p/2P1P3/7P/4B1r1/R5K1 w - - 0 30 | g8g2 | Is the Black king in check? | No | check |
3r1rk1/1p2qpbp/p1bp1np1/2p5/P3PQ2/2N3NP/BPP2PP1/3RR1K1 w - - 0 18 | Qc1 | Is the move from a2 to g8 legal? | No | legality |
4b3/3k2p1/p2p4/4rpB1/2R5/P1P3bP/1P3NP1/5K2 b - - 0 37 | Bh5 | Is the Black king in check? | No | check |
1k6/pP2r2p/3Rb1p1/2Pp1p2/2p4P/P1P1K1P1/6B1/8 w - - 0 44 | c6 | Does White have any isolated pawns? | No | structure |
r2q1rk1/pp4pQ/2bb1p2/3pp1P1/3N1P2/2P1P3/PP6/RNBK3R b - - 0 20 | h2h7 | Is the Black king in check? | Yes | check |
2r4k/pp2b1rp/8/6q1/3QR3/2pN4/P1P2RP1/6K1 b - - 7 26 | Rf8 | Is the d-file open, semi-open, or closed? | open | files |
2r1kbr1/3b4/p7/3PBpp1/1p2q3/4Q3/PP3PP1/K2R3R w - - 2 24 | Qb6 | What piece is on f7? | Empty | occupancy |
r1bq1rk1/pp1n1p1p/7p/1B2pNb1/4P1Q1/2P5/P4PPP/R3K2R w KQq - 2 3 | h4 | Identify any Black knight outposts on the board. | None | outposts |
8/8/5r2/2kp1P2/1p3R2/3K4/1P6/8 w - - 0 60 | b3 | Identify any Black knight outposts on the board. | e4 | outposts |
r1b2r2/3pRp2/1RpP1k1p/2P2pp1/1pBK4/6P1/P6P/8 b - - 1 27 | h5 | What piece is on a1? | Empty | occupancy |
r1bqr1k1/p2nbp2/2p1pn1Q/1p4N1/3P4/2NB4/PPP3PP/4RRK1 b q - 2 7 | Nf8 | Does Black have any isolated pawns? | No | structure |
rqb2rk1/5ppp/p1n2b2/4p3/NP1Pp3/P3BN2/5PPP/R2Q1RK1 w - - 0 17 | d5 | Does White have any passed pawns? | No | structure |
rnbqkb1r/pp2pp1p/5np1/6B1/2pN4/2N5/PP2PPPP/R2QKB1R w KQkq - 0 7 | Bxf6 | Is the move from d4 to b3 legal? | Yes | legality |
7k/3n1pp1/3P1n1p/5P2/1P6/N3QP1K/q6P/8 b - - 0 41 | Qd5 | Does Black have any passed pawns? | No | structure |
r4bk1/pb1nq1p1/4p3/1Bp3p1/8/6Q1/P1PB2PP/4R2K w - - 0 25 | Bc4 | Does White have any passed pawns? | No | structure |
4rk1n/1p3p1P/p7/3pqp2/2p4Q/P3r3/1PP5/1K3R1R w - - 0 34 | Rhg1 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r1q2rnk/pb1nb1p1/1p1p1pPp/2p1pP2/2P1P3/2NP4/PP4BP/R1BQ1RNK w - - 0 16 | Qh5 | Is the g-file open, semi-open, or closed? | closed | files |
r3r1k1/2pq2pp/bpn5/p2p4/4PP2/1Q2R1P1/PB4BP/R5K1 b - - 0 19 | a4 | Is the move from g7 to d1 legal? | No | legality |
rnb1k2r/ppp1qppp/3p1n2/4p3/2PPP3/5P2/PP4PP/R1BQKBNR b KQkq - 0 7 | Nc6 | Does White have any passed pawns? | No | structure |
3B4/PR6/6k1/3n2P1/3r4/4p3/8/2K5 b - - 0 70 | Ra4 | What piece is on a7? | White Pawn | occupancy |
r2r2k1/1p3ppp/1q1p1n2/2b1p1B1/p1PpP3/3P3P/PP2NPP1/1R1Q1RK1 b - - 1 1 | d5 | Does Black have any passed pawns? | No | structure |
rn1qk1nr/ppp2pbp/3p4/4P3/2BP1B2/2N1Q1Pb/PPP4P/R4RK1 b kq - 0 12 | Ne7 | What piece is on b5? | Empty | occupancy |
Q7/5p1k/6p1/3Bq2p/P6P/3b2P1/5PK1/8 w - - 3 61 | Qb7 | What is the material balance in this position? | White is up 1 pawn of material | material |
2r1k2r/1p1n1pp1/pq2pn1p/3p4/3P1B2/Q1P3P1/PP2BP1P/R4RK1 w k - 0 17 | Rac1 | Is the move from a1 to e1 legal? | Yes | legality |
8/3B4/5kr1/1PK5/8/1P6/8/8 b - - 0 73 | Ke7 | Is the move from f6 to c7 legal? | No | legality |
8/1QR3bk/pp1p2pp/3P1p2/1P1qrP2/8/P1R3PP/5K2 b - - 2 39 | Qd3+ | Is the c-file open, semi-open, or closed? | open | files |
rnbqkb1r/1p2pppp/p1p2n2/3p4/2PP4/2N2N2/PP2PPPP/R1BQKB1R w KQkq - 0 5 | e3 | Does Black have any passed pawns? | No | structure |
r1b1kb1r/1pqBpppp/p2p1n2/2p5/4P3/2P2N2/PPQP1PPP/RNB2RK1 b kq - 0 7 | b5d7 | Is the White king in check? | No | check |
2q4r/2p4p/kpnp2p1/p2b4/P6Q/1PR2NP1/2P3BP/2K5 w - - 0 1 | Rxc6 | Does Black have any passed pawns? | No | structure |
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